I'm not sure exactly what you mean, but I'll describe the bumper for you.
The plastic painted part you see is not the bumper.  It's the bumper
cover.  Underneath that is typically a steel bumper.  That's the case
with
the Santa Fe.  It's entirely possible to have bent the steel bumper
underneath while the cover may return to its original shape.

Drop a photo and message over at the Santa Fe forum.  I'm sure a lot of us
over there would love to hear about it!.

http://p211.ezboard.com/bhyundaisantafemessageboard

Gordo